UE Capability Information for D2D Frequency Band Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in configuring appropriate frequency bands for Device-to-Device (D2D) operations, as conventional user-equipment capability information does not include details on supported frequency bands for D2D operations, leading to inefficient resource allocation and reliability issues.
Innovation Solution
User equipment notifies the network about the frequency bands it supports for D2D operations, allowing the network to configure appropriate bands, thereby preventing wasteful resource allocation and enhancing D2D operation reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network configures frequency bands for D2D operation without UE capability information, then the configuration process is simple, but the reliability of D2D operation deteriorates due to unsuitable frequency band allocation
Solution Approach 1:
The user equipment performs preliminary action by including D2D-supported frequency band information in its capability notification to the network before D2D operation begins. This allows the network to pre-configure appropriate frequency bands, avoiding unreliable allocations and ensuring suitable frequency band selection from the outset.
Solution Approach 2:
The patent introduces an intermediary element (enhanced capability information structure) that mediates between the UE and network. This intermediary carries D2D frequency band support details, enabling informed network configuration decisions while maintaining a relatively simple overall system architecture.
2Productivity
If the network allocates frequency bands without knowing UE D2D support capabilities, then the allocation process is fast and simple, but resource waste increases due to assigning unsupported bands
Solution Approach 1:
The user equipment provides feedback information about its D2D-supported frequency bands to the network. Based on this feedback, the network adjusts its allocation decisions to assign only supported bands, eliminating wasteful allocations of unsupported frequency bands and optimizing radio resource utilization.
Solution Approach 2:
The patent changes the parameter structure of UE capability information to include D2D frequency band support details. This parameter enhancement enables the network to make more precise allocation decisions, transforming the allocation process from a blind assignment to an informed resource distribution that avoids waste.
3Adaptability or versatility
If conventional UE capability information is used, then the information structure remains simple, but the network cannot configure appropriate frequency bands for D2D operation
Solution Approach 1:
The enhanced UE capability information structure serves multiple functions: it continues to convey traditional UE capabilities while simultaneously providing D2D frequency band support information. This multi-functionality approach allows the network to configure D2D operations appropriately without requiring entirely separate information mechanisms.
Data Source
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AI summary
Provided are a method for receiving capability information in a wireless communication system, the method performed by a base station, and the base station using the method. The method comprises: receiving, from a user equipment, UE, which supports a device to device, D2D, communication and a D2D discovery, the capability information, wherein the capability information includes simultaneous support band information and D2D discovery support band information, wherein the simultaneous support band information includes at least one frequency band on which the UE supports a simultaneous transmission of a cellular communication and the D2D communication, and wherein the D2D discovery support band information includes frequency bands on which the UE supports the D2D discovery.